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Thread: Robber Flies

  1. #1
    Join Date
    Mar 2004
    Location
    Bend, OR USA
    Posts
    93

    Post

    Over the last week or so there are suddenly hundreds of those big robber flies (Diptera: Asilidae) around. These are the big ones, pretty close to 2 inches long. Are these guys significant predators on my field workers? I haven't seen one kill a bee yet, but that doesn't mean they aren't doing it.

    Thanks,
    Roger

  2. #2
    Join Date
    Mar 2004
    Location
    Bend, OR USA
    Posts
    93

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    Nobody had any experience with these things?

  3. #3
    Join Date
    Aug 2002
    Location
    Nehawka, Nebraska USA
    Posts
    46,553

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    I've never heard of them.

  4. #4
    Join Date
    Jan 2003
    Location
    Kiel WI, USA
    Posts
    2,368

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    I did a quick search, and got a page with the words "significant depredation of apiaries". Yikes.

  5. #5
    Join Date
    Mar 2004
    Location
    Bend, OR USA
    Posts
    93

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    Wow, I stumped Michael Bush! This is actually better than getting a reply to my question.

    Roger

  6. #6
    Join Date
    Aug 2002
    Location
    Nehawka, Nebraska USA
    Posts
    46,553

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    Contrary to popular belief there are a few things I know nothing about.

    Anyone have a picture?

  7. #7
    Join Date
    Nov 2003
    Location
    Williston, NC, USA
    Posts
    1,779

    Post

    Check out Google. They've got loads of info and pictures.

  8. #8
    Join Date
    Aug 2002
    Location
    Nehawka, Nebraska USA
    Posts
    46,553

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    Now that I see the picture I have seen them before. Never a lot of them.

  9. #9
    Join Date
    Mar 2004
    Location
    Bend, OR USA
    Posts
    93

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    I saw one today with one of my bees. Usually they stay a little ways away from me but this one flew right up to me as if to show off that he was eating one of my bees.

    There's one every 10 feet out in my fields. No wonder my hives stopped putting up new stores when these things showed up. They're the size of a small dragonfly, almost 2", but with a stockier body. There are so many of them around they must be decimating my field workers.

    Roger

  10. #10
    Join Date
    Aug 2002
    Location
    Julian, NC, USA
    Posts
    252

    Post

    I have seen them with a honey bee in their clutches and I do what I can to kill them. Doesnt seem to be a big problem with the survival of the colony. If you have hundreds of them it could be a problem.

    Kurt

  11. #11
    Join Date
    Oct 2002
    Location
    The Scenic Flint Hills , KS
    Posts
    5,159

    Post

    I had a Eutolmus rufibarbis setting on the front of one of my hives this weekend sucking a bee. It was a bit difficult to identi-fly after I dealt with it.

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